English

Pathological center foliation with dimension greater than one

Dynamical Systems 2017-05-17 v1

Abstract

In this paper we are considering partially hyperbolic diffeomorphims of the torus, with dim(Ec)>1.dim(E^c) > 1. We prove, under some conditions, that if the all center Lyapunov exponents of the linearization A,A, of a \mbox{DA-diffeomorphism} f,f, are positive and the center foliation of ff is absolutely continuous, then the sum of the center Lyapunov exponents of ff is bounded by the sum of the center Lyapunov exponents of A.A. After, we construct a C1C^1-open class of volume preserving \mbox{DA-diffeomorphisms}, far from Anosov diffeomorphisms, with non compact pathological two dimensional center foliation. Indeed, each ff in this open set satisfies the previously established hypothesis, but the sum of the center Lyapunov exponents of ff is greater than the corresponding sum with respect to its linearization. It allows to conclude that the center foliation of ff is non absolutely continuous. We still build an example of a DA-diffeomorphism, such that the disintegration of volume along the two dimensional, non compact center foliation is neither Lebesgue nor atomic.

Keywords

Cite

@article{arxiv.1705.05422,
  title  = {Pathological center foliation with dimension greater than one},
  author = {J. S. Costa and F. Micena},
  journal= {arXiv preprint arXiv:1705.05422},
  year   = {2017}
}
R2 v1 2026-06-22T19:47:48.807Z